Samba: Windows &lt;==&gt; AIX

Hello All,
I am not used to Samba but i want to get a Windows box to access the
directory : /home/smbuser on an AIX system.
I have installed Samba on my AIX box, the daemons smbd and nmbd are
running. I used YAST interface to configure the share /home/smbuser.
However, when i try to access the share from my Windows system, i get a
window that gives me three options for authentication namely : PCNFSD, NIS,
UID/GID. It defaults to UID/GID with -2 as the value for each which point to
nodoby/nobody. But i setup a user called smbuser as the guest account. I
don't have NIS for authentication, neither PCNFSD. Are the mandatory to get
it to work?
Does anyone have a functional installation of WINDOWS accessing AIX
directory using SAMBA? I will appreciate any useful configuration tips to
get this to work.
Thanks in Advance.
Sunday.

FYI:
We don't have any file sharing enabled between our AIX UNIX servers and
Windows machines. We never consider any file sharing as this would be
beyond our existing C&A approved security procedures. Our end users use
ftp via Hummingbird Neighborhood to get to the files and directories by
drag & drop.

A free, easy and secure method would be to enable "ssh" on the AIX
systems and then install "winscp" on your windows systems. Winscp allows
drag & drop like Hummingbird over the "ssh" and "sftp" protocols.

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